New Doppler Shift Gizmo

The ExploreLearning development team is proud to present a new Doppler Shift Gizmo. This new Gizmo offers several features that transform a very popular Gizmo into one of our best. Students can listen to a sound file of an ambulance passing by, then manipulate the source speed, wave frequency, and speed of sound. A ruler is provided to measure wavelength in front of and behind the source, and the observed frequency can be displayed as well. Altogether an eye-catching and ear-opening activity!

We have also released an updated version of Photosynthesis - Activity A (the new version is called Photosynthesis Lab). Among other changes, we have added a temperature slider and updated the Exploration Guide and assessment.